chore(deps): update dependency @testing-library/svelte to v4 (#276)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@testing-library/svelte](https://togithub.com/testing-library/svelte-testing-library) | [`^3.2.2` -> `^4.0.0`](https://renovatebot.com/diffs/npm/@testing-library%2fsvelte/3.2.2/4.0.1) | [![age](https://badges.renovateapi.com/packages/npm/@testing-library%2fsvelte/4.0.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/npm/@testing-library%2fsvelte/4.0.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/npm/@testing-library%2fsvelte/4.0.1/compatibility-slim/3.2.2)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/@testing-library%2fsvelte/4.0.1/confidence-slim/3.2.2)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>testing-library/svelte-testing-library (@&#8203;testing-library/svelte)</summary>

### [`v4.0.1`](https://togithub.com/testing-library/svelte-testing-library/releases/tag/v4.0.1)

[Compare Source](https://togithub.com/testing-library/svelte-testing-library/compare/v4.0.0...v4.0.1)

##### Bug Fixes

-   spurious commit to trigger release ([12eaf28](https://togithub.com/testing-library/svelte-testing-library/commit/12eaf28dec8a0fce165ed6a249237fdc29ba6554))

### [`v4.0.0`](https://togithub.com/testing-library/svelte-testing-library/releases/tag/v4.0.0)

[Compare Source](https://togithub.com/testing-library/svelte-testing-library/compare/v3.2.2...v4.0.0)

##### Features

-   update for svelte 4 ([a7ad7fd](https://togithub.com/testing-library/svelte-testing-library/commit/a7ad7fd969f2dc0d0cc70bb81539991a8c77f327))

##### BREAKING CHANGES

-   moving to ESM

</details>

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package.json

@@ -13,7 +13,7 @@
   },
   "devDependencies": {
     "@testing-library/dom": "^9.3.1",
-    "@testing-library/svelte": "^3.2.2",
+    "@testing-library/svelte": "^4.0.3",
     "@typescript-eslint/eslint-plugin": "^5.60.0",
     "@typescript-eslint/parser": "^5.60.0",
     "@unpic/core": "workspace:^",